diff --git a/env.example b/env.example
index c2525547..537e5c81 100644
--- a/env.example
+++ b/env.example
@@ -180,7 +180,7 @@ EMBEDDING_BINDING_HOST=http://localhost:11434
 # EMBEDDING_BINDING_API_KEY=your_api_key
 
 ### Optional for Ollama embedding
-# OLLAMA_EMBEDDING_NUM_CTX=8192
+OLLAMA_EMBEDDING_NUM_CTX=8192
 ### use the following command to see all support options for Ollama embedding
 ### lightrag-server --embedding-binding ollama --help